Using old skeleton coral

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Keithhjs

Aquarium Advice Addict
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I have some large pieces of old coral I had in a tank about 10 years ago. They are nice for aquascaping but have old coraline algae dried on them and when you move it it does drop little pieces of dust and coral. Is this safe to put in an established tank? Should I soak it for an extended time, or wash with vinegar, etc? Any helpful hints are appreciated.
 

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I just rinse and add. Here is one of my tanks exculusively skeletons
 
Does it matter that the piece was once like live rock with organisms all over it and now had sat dry in a box outside for 10 years?
 
Not if you rinse all the debris off. Even if you didn't it really wouldn't be a very big deal just added ammonia to your cycle and more particles to filter out
 
I was worried that maybe the ammonia spike might harm my fish, inverts, and corals. I am installing a second protein skimmer in the next few days. Maybe I will rinse & soak, final wash it in tank water and the try adding it down the road.
 
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